Home / 28,935.78-39,939.78-16,839.09

Finding the Fourth Proportional to 28,935.78, 39,939.78 and 16,839.09

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Solution

The fourth proportional to 28,935.78, 39,939.78 and 16,839.09 is: 23,242.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,935.78 : 39,939.78 = 16,839.09 : x
  2. Step 2: Convert to fraction form
    28,935.78/39,939.78 = 16,839.09/x
  3. Step 3: Cross multiply
    28,935.78x = 39,939.78 × 16,839.09
  4. Step 4: Simplify right side
    28,935.78x = 672,549,613.15
  5. Step 5: Solve for x
    x = 672,549,613.15/28,935.78
  6. Step 6: Final answer
    x = 23,242.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.